コード例 #1
0
ファイル: video.c プロジェクト: MadFishTheOne/mpv
double update_video(struct MPContext *mpctx, double endpts)
{
    struct sh_video *sh_video = mpctx->sh_video;
    struct vo *video_out = mpctx->video_out;
    sh_video->vfilter->control(sh_video->vfilter, VFCTRL_SET_OSD_OBJ,
                               mpctx->osd); // for vf_sub
    if (!mpctx->opts->correct_pts)
        return update_video_nocorrect_pts(mpctx);

    if (sh_video->gsh->attached_picture)
        return update_video_attached_pic(mpctx);

    double pts;

    while (1) {
        if (load_next_vo_frame(mpctx, false))
            break;
        pts = MP_NOPTS_VALUE;
        struct demux_packet *pkt = NULL;
        while (1) {
            pkt = demux_read_packet(mpctx->sh_video->gsh);
            if (!pkt || pkt->len)
                break;
            /* Packets with size 0 are assumed to not correspond to frames,
             * but to indicate the absence of a frame in formats like AVI
             * that must have packets at fixed timecode intervals. */
            talloc_free(pkt);
        }
        if (pkt)
            pts = pkt->pts;
        if (pts != MP_NOPTS_VALUE)
            pts += mpctx->video_offset;
        if (pts >= mpctx->hrseek_pts - .005)
            mpctx->hrseek_framedrop = false;
        int framedrop_type = mpctx->hrseek_active && mpctx->hrseek_framedrop ?
                             1 : check_framedrop(mpctx, -1);
        struct mp_image *decoded_frame =
            decode_video(sh_video, pkt, framedrop_type, pts);
        talloc_free(pkt);
        if (decoded_frame) {
            determine_frame_pts(mpctx);
            filter_video(mpctx, decoded_frame);
        } else if (!pkt) {
            if (!load_next_vo_frame(mpctx, true))
                return -1;
        }
        break;
    }

    if (!video_out->frame_loaded)
        return 0;

    pts = video_out->next_pts;
    if (pts == MP_NOPTS_VALUE) {
        MP_ERR(mpctx, "Video pts after filters MISSING\n");
        // Try to use decoder pts from before filters
        pts = sh_video->pts;
        if (pts == MP_NOPTS_VALUE)
            pts = sh_video->last_pts;
    }
    if (endpts == MP_NOPTS_VALUE || pts < endpts)
        add_frame_pts(mpctx, pts);
    if (mpctx->hrseek_active && pts < mpctx->hrseek_pts - .005) {
        vo_skip_frame(video_out);
        return 0;
    }
    mpctx->hrseek_active = false;
    sh_video->pts = pts;
    if (sh_video->last_pts == MP_NOPTS_VALUE)
        sh_video->last_pts = sh_video->pts;
    else if (sh_video->last_pts > sh_video->pts) {
        MP_WARN(mpctx, "Decreasing video pts: %f < %f\n",
                sh_video->pts, sh_video->last_pts);
        /* If the difference in pts is small treat it as jitter around the
         * right value (possibly caused by incorrect timestamp ordering) and
         * just show this frame immediately after the last one.
         * Treat bigger differences as timestamp resets and start counting
         * timing of later frames from the position of this one. */
        if (sh_video->last_pts - sh_video->pts > 0.5)
            sh_video->last_pts = sh_video->pts;
        else
            sh_video->pts = sh_video->last_pts;
    } else if (sh_video->pts >= sh_video->last_pts + 60) {
        // Assume a PTS difference >= 60 seconds is a discontinuity.
        MP_WARN(mpctx, "Jump in video pts: %f -> %f\n",
                sh_video->last_pts, sh_video->pts);
        sh_video->last_pts = sh_video->pts;
    }
    double frame_time = sh_video->pts - sh_video->last_pts;
    sh_video->last_pts = sh_video->pts;
    if (mpctx->sh_audio)
        mpctx->delay -= frame_time;
    return frame_time;
}
コード例 #2
0
ファイル: video.c プロジェクト: prodigeni/mpv
double update_video(struct MPContext *mpctx, double endpts)
{
    struct dec_video *d_video = mpctx->d_video;
    struct vo *video_out = mpctx->video_out;

    if (d_video->header->attached_picture)
        return update_video_attached_pic(mpctx);

    if (load_next_vo_frame(mpctx, false)) {
        // Use currently queued VO frame
    } else if (d_video->waiting_decoded_mpi) {
        // Draining on reconfig
        if (!load_next_vo_frame(mpctx, true))
            return -1;
    } else {
        // Decode a new frame
        struct demux_packet *pkt = demux_read_packet(d_video->header);
        if (pkt && pkt->pts != MP_NOPTS_VALUE)
            pkt->pts += mpctx->video_offset;
        if ((pkt && pkt->pts >= mpctx->hrseek_pts - .005) ||
                d_video->has_broken_packet_pts)
        {
            mpctx->hrseek_framedrop = false;
        }
        int framedrop_type = mpctx->hrseek_active && mpctx->hrseek_framedrop ?
                             1 : check_framedrop(mpctx, -1);
        struct mp_image *decoded_frame =
            video_decode(d_video, pkt, framedrop_type);
        talloc_free(pkt);
        if (decoded_frame) {
            filter_video(mpctx, decoded_frame, false);
        } else if (!pkt) {
            if (!load_next_vo_frame(mpctx, true))
                return -1;
        }
    }

    // Whether the VO has an image queued.
    // If it does, it will be used to time and display the next frame.
    if (!video_out->frame_loaded)
        return 0;

    double pts = video_out->next_pts;
    if (endpts == MP_NOPTS_VALUE || pts < endpts)
        add_frame_pts(mpctx, pts);
    if (mpctx->hrseek_active && pts < mpctx->hrseek_pts - .005) {
        vo_skip_frame(video_out);
        return 0;
    }
    mpctx->hrseek_active = false;
    double last_pts = mpctx->video_next_pts;
    if (last_pts == MP_NOPTS_VALUE)
        last_pts = pts;
    double frame_time = pts - last_pts;
    if (frame_time < 0 || frame_time >= 60) {
        // Assume a PTS difference >= 60 seconds is a discontinuity.
        MP_WARN(mpctx, "Jump in video pts: %f -> %f\n", last_pts, pts);
        frame_time = 0;
    }
    mpctx->video_next_pts = pts;
    if (mpctx->d_audio)
        mpctx->delay -= frame_time;
    return frame_time;
}